import { col } from '../csv.js';
import {
  PALETTE, FONT, axisCommon, categoryAxis, titleStyle, legendStyle,
  lineSeries, footnote, watermarks, LAYOUT,
} from '../theme.js';

/**
 * 图 3：毛利率 vs 非国际净利率，两条线的简版对照
 * 从 margin.csv 复用同一份数据，只挑两列
 */
export function twoLineChart(rows, { width, height }) {
  return {
    backgroundColor: '#fff',
    title: { ...titleStyle, text: '毛利率与非国际净利率（半年与年度）' },
    legend: {
      ...legendStyle,
      top: LAYOUT.legendTop,
      data: ['毛利率', '非国际归母净利率'].map(name => ({
        name,
        icon: 'emptyCircle',  // 全部折线图
      })),
    },
    grid: { left: 72, right: 48, top: LAYOUT.gridTop, bottom: 62 },
    tooltip: {
      trigger: 'axis',
      valueFormatter: (v) => `${v}%`,
      textStyle: { fontFamily: FONT },
    },
    xAxis: { ...categoryAxis, data: col(rows, 'period') },
    yAxis: {
      ...axisCommon,
      type: 'value',
      name: '比率（%）',
      nameLocation: 'middle',
      nameGap: 46,
      nameTextStyle: { color: PALETTE.grey, fontSize: 13, fontFamily: FONT },
      min: -5,
      max: 80,
      interval: 25,
      axisLabel: { ...axisCommon.axisLabel, formatter: '{value}%' },
    },
    series: [
      lineSeries({
        name: '毛利率',
        data: col(rows, 'gross_margin'),
        color: PALETTE.navy,
        labelPosition: 'top',
        formatter: (p) => `${p.value}%`,
        width: 3.5,
      }),
      lineSeries({
        name: '非国际归母净利率',
        data: col(rows, 'non_gaap_net_margin'),
        color: PALETTE.coral,
        labelPosition: 'top',
        formatter: (p) => `${p.value}%`,
      }),
    ],
    graphic: [
      ...watermarks(width, height),
      footnote('示例数据 | @思考的Joey'),
    ],
  };
}